Alpha-lipoic acid (ALA) is an organosulfur compound derived from caprylic acid. It is naturally present in every cell in the body and plays a crucial role in metabolism, specifically in energy production. ALA functions as a cofactor for several mitochondrial enzyme complexes involved in carbohydrate and fat metabolism. It exists in two enantiomeric forms, R-lipoic acid and S-lipoic acid, with R-lipoic acid being the biologically active form naturally synthesized by mammals. ALA is unique among antioxidants because it is both water and fat-soluble, allowing it to function in virtually any part of the body, including the brain. It can also regenerate other antioxidants such as vitamin C, vitamin E, and glutathione. Due to its antioxidant properties and metabolic roles, ALA has been studied for various health applications, including nerve health, blood sugar management, and brain function. (NIH ODS, PubChem)
Deep dive
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Known interactions
Compound-pair rule
Note
Alpha-lipoic acid can affect blood sugar, adding to diabetes medication effects.
Monitor and discuss with your provider.
Category rule: glp1 × supplement
Note
GLP-1 medications slow stomach emptying, changing how/when oral supplements absorb; rapid weight loss raises the importance of protein and micronutrients.
Time oral supplements when nausea is lowest; prioritize protein and micronutrients; discuss with your provider.
Category rule: supplement × medication
Note
Some supplements change how the body processes medications (absorption, liver enzymes, or additive effects).
Specific pairs are checked against a licensed drug database and shown with their own severity. Always confirm with your provider or pharmacist.
Stackwise compiles summaries from publicly available scientific and regulatory references. Always verify important decisions with a licensed clinician.
Related compounds
Others in the supplement category or studied for the same goals.